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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1984 1
1987 1
1989 1
1990 2
1992 2
1999 1
2000 2
2001 1
2002 1
2004 1
2005 4
2006 1
2007 2
2008 5
2009 10
2010 5
2011 7
2012 13
2013 7
2014 2
2015 2
2016 2
2017 1
2020 0
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Similar Articles for PMID: 20723820

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